My application requires lead shot to be "fed" single file thru a thinwall metal tube with an ID (inside diameter) of 0.190" (in)...

#BB sizes shot is noted as 0.180" (in)

This would work fine in my application except for the fact that Remington #BB "field grade" shot is not uniformly round...and the "oblong" out-of-round shot will not "feed" thru my thinwall tube....

I feel that #B size shot (0.170") would work even with some unroundness but I can only find #B size in custom orders of 1000lb minimum...

As in my OP... plated shot is uniformly round but not cost effective....for my application....

If there are no other options in a supplier for #BB size in something other than "field grade"... I am left to sifting the unround #BB size shot thru a sieve to remove the unround shot.... which is time consuming and also not cost effective....

Therefore, I had hopes that someone with experience in suppliers of lead shot could lead to my query...